Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-39800

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/09/2025
Last modified:
16/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> btrfs: abort transaction on unexpected eb generation at btrfs_copy_root()<br /> <br /> If we find an unexpected generation for the extent buffer we are cloning<br /> at btrfs_copy_root(), we just WARN_ON() and don&amp;#39;t error out and abort the<br /> transaction, meaning we allow to persist metadata with an unexpected<br /> generation. Instead of warning only, abort the transaction and return<br /> -EUCLEAN.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 2.6.29 (including) 6.1.149 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.103 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.44 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.16.4 (excluding)
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools